#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<stdio.h>
#include<stdlib.h>
using std::cout;
using std::endl;

namespace test1
{
	int t = 3;
}
//using namespace test1;
void ADD(int x, int y)
{
	cout << x + y << endl;
}

void ADD(double x, double y)
{
	cout << x + y << endl;
}


int main()
{
	int a = 0;
	int& b = a;
	b = 1;
	ADD(a, b);
	double c = 1.2;
	double d = 3.4;
	ADD(c, d);
	cout << "a = " << a << endl;
	cout << test1::t << endl;
}